#7849: Error on pattern matching of an existential whose context includes a type function -------------------------------------+------------------------------------- Reporter: guest | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.10.1 Component: Compiler | Version: 7.4.2 (Type checker) | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thomie): * difficulty: => Unknown * milestone: => 7.10.1 Comment: With HEAD (ghc-7.9.20141121), the error message is still the same, except for these 2 extra lines: {{{ Expected type: IO b0 Actual type: IO () }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7849#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler